| Citation |
IUCN SSC Amphibian Specialist Group 2018. Philautus schmackeri. The IUCN Red List of Threatened Species 2018: e.T26459A58475542. http://dx.doi.org/10.2305/IUCN.UK.2018-1.RLTS.T26459A58475542.en. Downloaded on 08 May 2019. |
Description |
Geographic Range
NATIVE
Extant (resident)
Philippines
NUMBER OF LOCATIONS
2
UPPER ELEVATION LIMIT
1,650 metres
LOWER ELEVATION LIMIT
100 metres
Geographic Range in detail
ESTIMATED AREA OF OCCUPANCY (AOO) (KM²)
CONTINUING DECLINE IN AREA OF OCCUPANCY (AOO)
EXTREME FLUCTUATIONS IN AREA OF OCCUPANCY (AOO)
ESTIMATED EXTENT OF OCCURRENCE (EOO) (KM²)
1593.07
CONTINUING DECLINE IN EXTENT OF OCCURRENCE (EOO)
EXTREME FLUCTUATIONS IN EXTENT OF OCCURRENCE (EOO)
CONTINUING DECLINE IN NUMBER OF LOCATIONS
EXTREME FLUCTUATIONS IN THE NUMBER OF LOCATIONS
RANGE DESCRIPTION
This species is known only from Mindoro Island, in the Philippines, at elevations of 100–1,650 m asl. It occurs in high elevation montane or mid-montane forests on large mountains and is known with certainty from the two largest massifs of Mount Halcon (type locality) and Mount Baco (Gonzales et al. 2000). Its extent of occurrence (EOO) is 1,593 km2 and it is considered to occur at two threat-defined locations.
Population
CURRENT POPULATION TREND
Decreasing
NUMBER OF MATURE INDIVIDUALS
POPULATION SEVERELY FRAGMENTED
No
CONTINUING DECLINE OF MATURE INDIVIDUALS
Population in detail
EXTREME FLUCTUATIONS
NO. OF SUBPOPULATIONS
CONTINUING DECLINE IN SUBPOPULATIONS
EXTREME FLUCTUATIONS IN SUBPOPULATIONS
ALL INDIVIDUALS IN ONE SUBPOPULATION
NO. OF INDIVIDUALS IN LARGEST SUBPOPULATION
DESCRIPTION
It is common in suitable forest habitat, and also survives in small numbers in adjacent disturbed forested areas. Due to ongoing decline in the extent and quality of habitat, the population is suspected to be decreasing.
Habitat and Ecology
SYSTEM
Terrestrial
HABITAT TYPE
Forest, Shrubland
GENERATION LENGTH (YEARS)
CONGREGATORY
MOVEMENT PATTERNS
Not a Migrant
CONTINUING DECLINE IN AREA, EXTENT AND/OR QUALITY OF HABITAT
Yes
Habitat and Ecology in detail
HABITAT AND ECOLOGY
This species inhabits arboreal microhabitats in montane and lowland forests. It breeds by direct development and deposits its eggs in humus in tree ferns and Pandanus and Freycenetia leaf axils.
CLASSIFICATION SCHEME
Habitats Suitability Major importance
1. Forest 1.6. Forest - Subtropical/Tropical Moist Lowland Suitable Yes
1.9. Forest - Subtropical/Tropical Moist Montane Suitable Yes
3. Shrubland 3.6. Shrubland - Subtropical/Tropical Moist Marginal
Threats
Agriculture & aquaculture
Annual & perennial non-timber crops
Wood & pulp plantations
Biological resource use
Logging & wood harvesting
Threats in detail
THREATS
The major threat is habitat loss due to shifting, slash-and-burn agriculture and small-scale wood collection by local settlements. Commercial logging took place across the lowlands of Mindoro Island, but this took place over 50 years ago and has now ceased; however secondary forests are still being cleared, albeit at a smaller scale, for the planting of timber plantations through the Integrated Forest Management Agreement (Philippines Red List Assessment Workshop May 2017).
CLASSIFICATION SCHEME
Threats Timing Stresses Scope Severity Impact score Invasive species Virus
2. Agriculture & aquaculture 2.1. Annual & perennial non-timber crops 2.1.1. Shifting agriculture Ongoing
1. Ecosystem stresses 1.1. Ecosystem conversion
1.2. Ecosystem degradation
Low Impact: 3
2.1.2. Small-holder farming Ongoing
1. Ecosystem stresses 1.1. Ecosystem conversion
1.2. Ecosystem degradation
Low Impact: 3
2.2. Wood & pulp plantations 2.2.1. Small-holder plantations Ongoing
1. Ecosystem stresses 1.1. Ecosystem conversion
1.2. Ecosystem degradation
Low Impact: 3
5. Biological resource use 5.3. Logging & wood harvesting 5.3.1. Intentional use: (subsistence/small scale) [harvest] Ongoing
1. Ecosystem stresses 1.2. Ecosystem degradation
Low Impact: 3
5.3.2. Intentional use: (large scale) [harvest] Past, Likely to Return
1. Ecosystem stresses 1.2. Ecosystem degradation
Past Impact
5.3.3. Unintentional effects: (subsistence/small scale) [harvest] Ongoing
1. Ecosystem stresses 1.2. Ecosystem degradation |
